Alstom SHPM 101 - Block Diagram Board ZH0735

SERVICE MANUAL R5888C
QUADRAMHO Chapter 2
Appendix A
Page 24 of 71
Figure 23: Block diagram board ZH0735
Disable filters Switch on to fault enabled Pole dead ‘A’ Pole dead ‘B’ Pole dead ‘C’
Zone 1
interrupt
gating
logic
Port A0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 Port B0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 Port C0 PC1 PC2 PC3 PC4 PC5 PC6 PC7
Fault detected by DEF Contact breaker open Comparator C–A zone 1 Comparator B–C zone 1 Comparator A–B zone 1 Comparator C–N zone 1 Comparator B–N zone 1 Comparator A–N zone 1 Block Z2T and Z3T
Zero sequence voltage level detector Comparator C–A zone 3 Comparator B–C zone 3 Comparator A–B zone 3 Comparator C–N zone 3 Comparator B–N zone 3 Comparator A–N zone 3 Channel in service Carrier received Comparator C–A zone 2 Comparator B–C zone 2 Comparator A–B zone 2 Comparator C–N zone 2 Comparator B–N zone 2 Comparator A–N zone 2 High set neutral current level detector
DB
Programmable
peripheral
interface 0
CS
Reset
DB
CS
Reset
Port B0
PB1 PB2 PB3 PB4 PB5 PB6 PB7
Port CD0
PC1 PC2 PC3 PC4 PC5 PC6 PC7
Port A0 PA1 PA2 PA3 PA4 PA5 PA6 PA7
Programmable
peripheral
interface 2
N
C
B
A
Phase
C
B
A
Low set current level detectors Over voltage level detectors
Memory input Memory input common
‘C’ phase trip ‘B’ phase trip ‘A’ phase trip Block auto reclose Any comparator operated Power swing indication Self check in progress Master reset/invert comparators Fuge fall Switch on to fault Aide trip Zone 3 time delayed trip Zone 2 time delayed trip Carrier received annunciation Any trip Carrier transmit
Sign wave to square
wave conversion
Push button
and push
button override
Comparator AB zone 6
INT T1
Port 1
P26
P25 T0
B039
Microcontroller
P20–P23
P27 P24
Reset
DB
4k x 8
aprom
D
AA
8 bit
latch
D
D
CS
Reset
6 bit ‘D’
type flip
flop
D
00 01 02 03 04 05
Reset
pulse
S1
ENSB1
S1
EN socket
S2
ENSB1
S3
ENSB1
S4
ENSB1
CSWX
ENSB1
CSWY
ENSB1
Port A0
PA1 PA2 PA3 PA4 PA5 PA6 PA7
Port B0
PB1 PB2 PB3 PB4 PB5 PB6 PB7
Port C0
PC1 PC2 PC3 PC4 PC5 PC6 PC7
Programmable
peripheral
interface 1
Code switch
enable
monitor
Inoperative
alarm circuits
Inoperative
alarm input
Input
buffer
enable
Phase
A
B
C
Spare
High set
current
level
detectors
Enable
Inoperative
alarm outputs
Power swing
Enable filters
Enable CSW Enable SB1 Enable SB2 Enable SB3
Enable SB4
Extended zone 1 reach 3 phase trip
Fuse fail indication Switch on to fault indication Aided trip indication
Zone 3 time delayed trip indication Zone 2 time delayed indication ‘C’ phase fault indication ‘B’ phase fault indication ‘A’ phase fault indication
Amplitude hysteresis (trip)
FF SOTF AT Z3 Z2 C B A
Indications
‘C’ phase memory output
Memory enabled Power swing timer run out Fault location Z3(PH) Fault location Z2(E) Fault location Z2(PH) Fault location Z1(PHLE)
120° 120°
‘A’ phase memory output
‘B’ phase memory output
Enable SK1